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Journal : Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)

PENGARUH DOSIS FUNGISIDA DAN PERIODE PENYIMPANAN TERHADAP VIABILITAS BENIH KAKAO (THEOBROMA CACAO L.) Budiarti, Tati; Yulmiarti, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 25 No. 3 (1997): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.399 KB) | DOI: 10.24831/jai.v25i3.1598

Abstract

The experiment of seed treatment and storage longevity on cacao seed valiability was. conducted at Seed Science and Technology Laboratory, Departement of Agronomy, Faculty of Agriculture, Bogor Agriculture University since March to July 1995. The objectives of this experiment were to find out the optimum dosage of fungicide treatment and storability on cacao seed. Split plot design was used in this experiment; main plot were storage periods i.e. I, 3, 5, 7, and 9 weeks and .sub plots were dosages of fungicide (active ingredient carbendazim + mankozeb) 0, 2, 4, 6, g/kg of ,seed with 3 replication. Each unit consisted of 40 seeds. Result (the experiment indicated that control seed (without fungicide) were infected by fungi 90.67 % on the first week and its germination capacity was only 57.33 %. Fungi infection increased rapidly after 1 week and its caused the viability lost. Application of 2, 4, 6 g fungicide/kg of seeds inhibited fungi growth and that treatments maintained seed viabilility until 9 weeks of storage periods. There are no significant difference among fungicide dosage, except on index vigor; application of 4 and 6 g (of fungicide result lower index vigor. Better fungicide dosage was4 .21g/kg of seeds based on quadratic regression Y = 20.80 + 43.10 X - 5.12 X2 (Y = germination capacity, X = dosage fungicide). Dominant fungi infected on seed storage were identified as Fusarium sp and Aspergillus sp. The storability of cacao seed with fungicide treatments on 9 weeks of storage period were still relatively high, the germination capacity more than 80% and the seeding vigor were not different among of all storage periods
STUDI KOMERSIALISASI BENIH PADI SAWAH VARIETAS UNGGUL Hadi, Setia; Budiarti, Tati; Haryadi, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 33 No. 1 (2005): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (59.343 KB) | DOI: 10.24831/jai.v33i1.1510

Abstract

Rice is the most important food in Indonesia and the rice demand has gradually increased during some decades.  There are several efforts to increase national rice production in order to minimize  rice import, such as using seed of improved variety, fertilizer, protection from pest and diseases, improving water management  and post harvest handling.  Cultivation of improved  variety is the most efficient way to  increase  rice production in Indonesia.   There are several improving characteristics on new released variety such as : early mature, high productivity, resistant to pests and diseases, resistant to lodging, and  high quality of rice.  During 1960 - 2000, more than 90 improved varieties were released by Ministry of Agriculture, but only several varieties (about 10%)  were accepted by the farmer and  cultivated in a large-scale area during  a long periode.   IR 64 is the most popular variety in many provinces more than 12 years, so that the variety has the  highest commercial level  and  efficency index among Cisadane, PB 42, PB 46 and the old improved variety.    Key words: Rice, Commercialization, Efficiency index
PENGARUH JARAK TANAM DAN PACLOBUTRAZOL TERHADAP PRODUKSI DAN VIABILITAS BENIH BUNGA MATAHARI (HELIANTHUS ANNUUS L.) Ramlafatma, ,; Widajati, Eny; Budiarti, Tati
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 27 No. 3 (1999): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1822.93 KB) | DOI: 10.24831/jai.v27i3.1570

Abstract

The research was conducted at Seed Science and Technology Field Experimental and Laboratory, Faculty of Agriculture, Bogor Agricultural University since January until July 1998. Randomized Block Design was used in this experiment which consist of two factors and three I replications. The first factors were row spacing 60 cm x 25 cm (J1) and 60 cm x 45 cm (J2) and the second factors were application of 100 ml paclobutrazol/plant with concentration 0 ppm (P1), 125 ppm (P2), 250 ppm (P3) and 500 ppm (P4). The plant height was increased at narrow spacing especially at 0 ppm paclobutrazol. Paclobutrazol application reduced plant height, increased stem diameter and it's caused minimal lodging at generatif period. The highest seed production per plot was resulted at 60 cm x 25 cm with 250 ppm and 500 ppm of paclobutrazol (146 % and 155 % as compared with control treatment), and the highest seed production per plant showed at 60 cm x 45 cm and 60 cm x 25 cm with 500 ppm of paclobutrazol (197 % and 198 % compared with control treatment). Paclobutrazol125 ppm, 250 ppm, and 500 ppm increased flower diameter, number seed per flower, 1000 seed weight, germination capacity, and seed vigour. The optimum combination of treatment was showed at 60 cm x 25 cm and 250 ppm of paclobutrazol.